How do I replenish my bots’ life?

These robots don’t run on courage alone! They will be beamed into the Astrotrain if their energy is fully depleted. After taking too much damage, a bot will have to recharge their armor. If you try to enter a level for an uncharged character, you will be asked to recharge first. Tap the heart to start recharging. Also, if the character is upgraded, or if you scan that character’s Telepod, their armor will be automatically recharged!